fix typo, change sample cert expiry value
fix typo, change sample cert expiry value

Signed-off-by: Charles Smith <dd8094a0ebe127b002d25a204df37082ff5d8b3b@docker.com>

docker/cli,Zebrilee/cli,thaJeztah/cli,ashfall/cli,riyazdf/cli,cpuguy83/cli,dnephin/cli,ashfall/cli,cpuguy83/cli,allencloud/cli,e11137/cli,dnephin/cli,docker/cli,e11137/cli,Zebrilee/cli,riyazdf/cli,redpanda/cli,thaJeztah/cli,allencloud/cli,redpanda/cli